Likelihood

For "Pest is Introduced" the lowest value of Entry or Establishment, as both are required for a successful introduction. For "Pest Spreads to Maximum Extent" this is an expert judgement on the likelihood of this occurrence.

Mitigated Risks

Likelihood

For "Pest is Introduced" the lowest value of Entry or Establishment, as both are required for a successful introduction. For "Pest Spreads to Maximum Extent" this is an expert judgement on the likelihood of this occurrence.

Further Information

Uncertainty

Uncertainty

Ticks indicate key sources of uncertainty for this pest. A cross indicates that there is less uncertainty associated with that aspect of the pest’s biology. A cross does not indicate there is full knowledge, merely that the uncertainties are unlikely to influence the rating (score).

Key uncertainty for pest

Ability to survive outdoors in the UK and impact on most recorded hosts.